package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Employee;
import com.sky.entity.Setmeal;
import com.sky.exception.BaseException;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * ClassName: CategoryServiceImpl
 * Package: com.sky.service.impl
 * Description:
 *
 * @Autehor 屈子岩
 * @Create 2024/8/31 20:53
 * @Version 1.0
 */
@Service
public class CategoryServiceImpl implements CategoryService {
    private final static Integer CATEGROY_SIZE = 0;
    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    @Override
    public PageResult pageQuery(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());
        Page<Category> page =categoryMapper.pageQuery(categoryPageQueryDTO);
        PageResult pageResult = new PageResult(page.getTotal(),page.getResult());
        return pageResult;
    }

    /**
     * 新增分类
     * @param categoryDTO
     * @return
     */
    @Override
    public void save(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        category.setStatus(StatusConstant.ENABLE);
        categoryMapper.save(category);
    }
    /**
     * 根据Id删除分类
     * @param id
     * @return
     */
    @Override
    public void deleteById(Long id) {
      Dish dish = dishMapper.getBycategoryId(id);
        if (dish != null){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        List<Setmeal>  setmeal =setmealMapper.getBycategoryId(id);
        if (setmeal != null && setmeal.size() != 0){
            throw  new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }

    /**
     * 启用禁用分类
     * @param status
     * @param id
     * @return
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                .build();
        categoryMapper.update(category);
    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> selectByType(Integer type) {
        List<Category> category =  categoryMapper.selectByType(type);
        if(category.size() == CATEGROY_SIZE){
            throw new BaseException("未查到当前分类信息");
        }
        return category;
    }

    /**
     * 修改分类
     * @param categoryDTO
     * @return
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
        categoryMapper.update(category);
    }

    //测试
    @Override
    public List<Category> list() {
        List<Category> category =  categoryMapper.list();
        return category;
    }


}
